63857954432 has 32 divisors (see below), whose sum is σ = 129302559300. Its totient is φ = 31405547520.

The previous prime is 63857954417. The next prime is 63857954477. The reversal of 63857954432 is 23445975836.

63857954432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56024996416 + 7832958016 = 236696^2 + 88504^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4081457 + ... + 4097072.

Almost surely, 2^63857954432 is an apocalyptic number.

It is an amenable number.

63857954432 is an abundant number, since it is smaller than the sum of its proper divisors (65444604868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63857954432 is an equidigital number, since it uses as much as digits as its factorization.

63857954432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178604 (or 8178592 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The spelling of 63857954432 in words is "sixty-three billion, eight hundred fifty-seven million, nine hundred fifty-four thousand, four hundred thirty-two".